How to open context menu in a panel on left click

[#1]

I was wondering if there is a simple way to open the context menu on left click event. I have tried triggering the oncontextmenu event using javascript, but the native context menu is not showing. Does anybody have any idea how to do that ?

[#2]

I was wondering if there is a simple way to open the context menu on left click event. I have tried triggering the oncontextmenu event using javascript, but the native context menu is not showing. Does anybody have any idea how to do that ?

[#3]

You can't do that with JavaScript. But why would you? The functions available in context menus are exposed to scripting.

[#4]

The requirement from the customer is to have the context menu displayed, when the user hovers a line from a list, and left clicks over an icon that is displayed only on hovering.